JPS6057757B2 - remote monitoring control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a transmitting circuit that connects a large number of terminal devices 2 to a receiver 1, sequentially calls each terminal device 2 to the receiver 1, and sends a control signal. 3, and a receiving circuit 4 that receives a reply signal from the called terminal device 2...
Each terminal device 2 is provided with a display circuit 5 which displays and self-maintains whether or not a reply signal has been received by the output of this receiving circuit 4, and the terminal device which generated the reply signal by the output of this display circuit 5. 2. A remote monitoring and control device is characterized in that it automatically sends a control signal with control content corresponding to the content of the reply signal during the control signal sending time period for... A remote monitoring and control device that can automatically send necessary control signals to a terminal when a reply signal is returned from the terminal without requiring any operation on the receiver side. It is on offer.

FIG. 1 shows the basic configuration of the remote monitoring and control device of the present invention, in which a receiver 1 and a number of terminal devices 2 are connected to data signal lines, synchronization signal lines, return signal lines, positive and negative power lines. The second
As shown in Figure a, an address signal consisting of a serial logic pulse train and a control signal for controlling the terminal device 2 of the selected address are transmitted from the receiver 1 to each terminal device 2 through the data signal line.・At the same time, a lock signal as shown in FIG. When there is information to be returned from the terminal device 2, a reply signal as shown in c in the figure is sent to the receiver 1 via the reply signal line.

However, this remote monitoring and control device is used, for example, as a crime prevention monitoring device, fire alarm, or other disaster prevention alarm device, and the receiver 1 sequentially calls each terminal device 2... - inquires whether or not it is in the crime prevention detection state, and when the required terminal device 2 is in the crime prevention detection state, for example, by operating the emergency push button 6, and the terminal device 2 is called by the receiver 1, the crime prevention detection state is detected. In the present invention, when this reply signal is received by the receiver 1, the reception status is displayed for each terminal 2, and at the same time, the A control signal is sent to the terminal device 2 that generated the reply signal, and an annunciator 7 such as a notification bell is driven in the terminal device 2. Further, for example, the receiver 1 is installed in the manager's room of an apartment complex, and each terminal device 2... is installed in each residence, and the monitoring power and control output of each terminal device 2... is as shown in the above example. It can be anything other than things. FIG. 3 shows the circuit configuration of the receiver 1 according to the embodiment of the present invention, which includes a control circuit 8 that creates and transmits a clock signal and controls the suspension of transmission of data signals, and a control circuit 8 that counts the clock signals and controls each terminal. A counter 9 for setting an address signal for calling the device 2, etc., a transmitting circuit 3 composed of a parallel input serial output type shift register 10, and a serial input parallel output type shift register 11. The display circuit 5 includes a receiving circuit 4, a decoder 12 for decoding the output of the counter 9, an AND gate 13, a latch circuit 1, and a display section 15. In the control circuit 8, the output of the oscillation unit 16 is input to the signal waveform generation unit 17 to generate a clock signal used for synchronized control of the entire device, and this is sent to each terminal device 2 through the synchronization signal line. It is also input to the counter 9 and the data transmission control section 18. Data transmission control section 18
This device uses a signal transmission format in which the receiver transmits an N-bit data signal, then pauses, and then transmits the next N-bit data signal, so the control signal for this signal transmission is This outputs the following. On the other hand, the shift register 10 constituting the transmitting circuit 3 reads the parallel address data output from the counter 9, and reads the parallel address data output from the data transmission control section 18. A data signal consisting of a series pulse train is transmitted under the control of a power signal. A shift register 11 constituting the receiving circuit 4 reads a reply signal returned as a serial pulse train consisting of one or more pulses, and outputs this as parallel data. Each bit output of this parallel data is sent to each terminal device 2, respectively.
... are input to the display circuit 5 provided correspondingly.
That is, the display circuits 5 are provided for each terminal 2, corresponding to the number of bits of data required to display the reply signal, and in the embodiment shown in FIG. Only the display circuit 5 for one predetermined bit of the reply signal in the device 2 is shown as a representative. In addition, in order to select the display circuit 5 corresponding to each terminal 2 . . . , the output of the counter 9 is decoded by the decoder 12 to determine which terminal 2 is currently called. Among the output terminals, the display circuit 5 to which the output terminal generating the output signal is connected is activated, and the display section 15 performs a display operation. Therefore, the AND gate 13 provided in the display circuit 5 receives the predetermined bit output of the shift register 11, the output of the predetermined output terminal of the decoder 12, and the l control signal from the data transmission control section 18, and sends a reply. Display circuit 5 according to the data content of the signal
An output signal is generated in the AND gate 13 of the display circuit 5 corresponding to the terminal device 5 to which the reply signal has been received and the control signal is input from the data transmission control section 18, and the latch circuit 14 performs a latching operation. This is to put the display section 15 into a display state. Next, when an output is generated in the latch circuit 14 and is latched, the latch circuit 14
The display section 15 is activated by the output of the latch circuit 14, and an AND gate 19 is provided corresponding to the output of the latch circuit 14.
The AND gate 19 is opened by inputting the input to one input terminal of the AND gate 19, and by connecting the other input terminal of the AND gate 19 to the corresponding output terminal of the decoder 12, the latch circuit 14 is brought into a latched state. decoder 12 at
When an output is generated at the output terminal corresponding to the display circuit 5, an output is generated at the output terminal of the AND gate 19. Therefore, by inputting the output of this AND gate 19 to the shift register 10 of the transmitting circuit 3, a control signal of a control command corresponding to the content of the received reply signal is sent to the terminal device 2 at the corresponding address. That will happen.
As described above, the present invention is configured to automatically send a control signal with control content corresponding to the content of the reply signal during the control signal sending time period to the terminal device that generated the reply signal by the display circuit output. , a device that can automatically send necessary control signals to a terminal device when a reply signal is returned from the terminal device without requiring any operation on the receiver side; Since there is no need for a separate operation circuit for each device, it has the effect of simplifying the circuit configuration, and allows accurate control signals to be sent even when the receiver side operator is absent, making it especially suitable for crime prevention and disaster prevention devices. This has the effect of enabling highly reliable system operation when used for other purposes.

In addition, since the control signal is sent during the control signal time period for the called terminal, there is no need to call the terminal again and send the control signal, and the monitoring information sent back from the terminal as a return signal is This has the effect that it can be dealt with quickly.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of a remote monitoring and control device to which the present invention is applied, FIG. 2 is a time chart explaining the operation of the same, and FIG. 3 is a block diagram of a receiver circuit according to an embodiment of the present invention. , 1 is a receiver, 2 is a terminal, 3 is a transmitter circuit, 4
5 is a receiving circuit, and 5 is a display circuit.

Claims (1)

[Claims] 1. A transmitting circuit that connects a large number of terminal devices to a receiver, sequentially calls each terminal device to the receiver, and sends a control signal;
The display circuit is equipped with a receiving circuit that receives a reply signal from the called terminal device, and a display circuit that displays and self-maintains whether or not a reply signal has been received for each terminal device using the output of the receiving circuit. A remote monitoring and control device characterized in that a control signal having a control content corresponding to the content of the reply signal is automatically sent out during a control signal sending time period to a terminal device that has output the reply signal.